ether77Ether77's profile on Character.AI. Find or create the Character that's rht for you. Chat with them, learn from them, and have fun!Diethylene glycol monomethyl ether for synthesis. CAS 111-77-3, chemical formula HOCH₂CH₂OCH₂CH₂OCH₃. - Find MSDS or SDS, a COA, data sheets and more information.